MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains a large number of embedded links designed to appear as a link farm for free PDF downloads, a common SEO poisoning tactic. These links ultimately redirect to known malicious infrastructure, specifically the URL https://ttraff.ru/wb, indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://ttraff.ru/wb?keyword=the%20jungle%20book%20oxford%20bookworms%20level%202%20pdf In PDF document text
- http://files.adentabrasil.com/uploads/1/3/1/4/131453365/cf0265b722f.pdfIn PDF document text
- http://files.jacquelinesdancestudio.com/uploads/1/3/1/4/131437147/63a2476c842.pdfIn PDF document text
- http://files.mr-stevens.com/uploads/1/3/0/7/130776864/zoxakaso.pdfIn PDF document text
- http://files.bellasapothecary.com/uploads/1/3/0/8/130814226/motem.pdfIn PDF document text
- http://files.fabledcollective.com/uploads/1/3/1/6/131606348/49c5d5c7377ec09.pdfIn PDF document text
- http://files.craftyjoe.com/uploads/1/3/2/7/132741181/80e89806a5104ae.pdfIn PDF document text
- http://files.carnegiepresby.org/uploads/1/3/2/3/132303382/xufogotibujiroj.pdfIn PDF document text
- http://files.cckidsfamilies.com/uploads/1/3/0/7/130775605/8214001.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://pabajosut.files.wordpress.com/2020/07/38737461099.pdfIn PDF document text
- https://vewibubod.files.wordpress.com/2020/06/jezakuzu.pdfIn PDF document text
- https://virebon.files.wordpress.com/2020/06/xarijomudazu.pdfIn PDF document text
- https://purekekimol.files.wordpress.com/2020/06/18261710560.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8462/8633/files/5457012243.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2806/2109/files/72576004333.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2649/7182/files/buvirikatemarovawu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8929/7568/files/59451900106.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0716/5095/files/93096767827.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6138/7170/files/gaxutubuzi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6148/6503/files/65438906839.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8085/1362/files/dakezimetatolugabijeguru.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006780.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6780 | 5580 bytes |
SHA-256: ffe1bf5fdf0ca77ce8ab04751b0e8cc713be52948994da36fab138793bc04a5e |
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font_01_sfnt_off00007a61.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A61 | 10944 bytes |
SHA-256: e5526d3980ca0e46b102b61f9de9da1ab47b9e4e97e670c30d6a02e3401a272b |
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